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| Tartan Name | Thorburn (1992) | | | | Category | Name
| | | | Designer | Smith Jnr, Dr Philip D | STA Ref | 6615 | | Date Recorded | Not Specified | STWR Ref | none |
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| Tartan Name | Thorburn (Lochcarron) | | | | Category | Clan/Family | | | | Designer | Not Specified | STA Ref | 6409 | | Date Recorded | Not Specified | STWR Ref | none |
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| Tartan Name | Thousand Islands | | | | Category | District
| | | | Designer | Not Specified | STA Ref | 7526 | | Date Recorded | Not Specified | STWR Ref | none |
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| Tartan Name | Thunderbird | | | | Category | Military
| Reference | 14297 | | Designer | Slauenwhite, Glen | | | | Date Recorded | 14/05/2024 | | |
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| Tartan Name | Tiger | | | | Category | Fashion
| Reference | 10538 | | Designer | Mangaroca International SA | | | | Date Recorded | 10/01/2012 | | |
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| Tartan Name | Tiger of Sweden | | | | Category | Corporate
| Reference | 10870 | | Designer | McDonald, Ronnie Jr | | | | Date Recorded | 02/08/2013 | | |
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| Tartan Name | Tigh Cladaich | | | | Category | Other | Reference | 14315 | | Designer | MacDonald, Ewan; Houston Kiltmakers | | | | Date Recorded | 04/06/2024 | | |
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| Tartan Name | Tilburg | | | | Category | District
| | | | Designer | Stoop, Marjan (AaBe Textiles, Tilburg) | STA Ref | 7464 | | Date Recorded | Not Specified | STWR Ref | none |
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| Tartan Name | Tilburg Hunting | | | | Category | District
| | | | Designer | Stoop, Marjan (AaBe Textiles, Tilburg) | STA Ref | 7428 | | Date Recorded | Not Specified | STWR Ref | none |
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| Tartan Name | Tilley, Sir Samuel Leonard | | | | Category | Commemorative
| | | | Designer | West Coast Woolen Mill | STA Ref | 5126 | | Date Recorded | Not Specified | STWR Ref | none |
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| Tartan Name | TIlted Kilt | | | | Category | Corporate
| Reference | 10682 | | Designer | Tilted Kilt Franchise Operating LLC | | | | Date Recorded | 23/08/2012 | | |
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| Tartan Name | Timespan | | | | Category | Corporate
| | | | Designer | Unknown | STA Ref | 1002 | | Date Recorded | Not Specified | STWR Ref | 1002 |
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| Tartan Name | Timmins (2013) | | | | Category | Name
| Reference | 10911 | | Designer | Timmins, P | | | | Date Recorded | 02/10/2013 | | |
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